{"schema_version":"secwatch.filing_event.v1","accession":"0001437749-25-036390","form_type":"8-K","ticker":"MNSB","cik":"0001693577","company_name":"MainStreet Bancshares, Inc.","filed_at":"2025-11-26T23:59:59+00:00","discovered_at":"2026-05-14T18:02:40.167097+00:00","generated_at":"2026-05-16T16:31:53.345944+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"MainStreet Bancshares CFO Thomas Chmelik to retire Dec 31, 2025; Alex Vari to succeed","bullets":["CFO Thomas Chmelik retires effective Dec 31, 2025; remains Senior EVP/Secretary through 2027 and stays on boards.","Alex Vari, current Bank CFO, will assume Company CFO role upon Chmelik's retirement.","Chmelik may sell up to 25% of his MNSB shares by Dec 31, 2027 for portfolio diversification.","Transition is orderly and not due to any disagreement with Company or Bank operations."],"urls":{"canonical":"https://secwatch.observer/filing/0001437749-25-036390","json":"https://secwatch.observer/filing/0001437749-25-036390.json","markdown":"https://secwatch.observer/filing/0001437749-25-036390.md","text":"https://secwatch.observer/filing/0001437749-25-036390.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1693577/000143774925036390/0001437749-25-036390-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1693577/000143774925036390/main20251121_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T16:31:53.345944+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}